From a130f2b36b72cadb3e570a0e7fb7ca6533886eb2 Mon Sep 17 00:00:00 2001
From: kju <kju@invalid.invalid>
Date: Tue, 12 Jan 2010 21:32:25 +0000
Subject: [PATCH] Allow snake to have more intuitive joystick control.

---
 games/snake/snake_game.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/games/snake/snake_game.c b/games/snake/snake_game.c
index 30fd9e0..37a2f7f 100644
--- a/games/snake/snake_game.c
+++ b/games/snake/snake_game.c
@@ -7,6 +7,11 @@
 #include "../../util.h"
 #include "../../joystick/joystick.h"
 
+// if defined, joystick controls are NOT as "seen"
+// by the snake but absolute, that is, if pressing
+// up, snake goes up, etc.
+#define GAME_SNAKE_NEWCONTROL
+
 	// MSB is leftmost pixel
 static uint8_t icon[8] PROGMEM =
 	{0xff, 0x81, 0xbd, 0xa5, 0xa5, 0xad, 0xa1, 0xbf};  // Snake icon
@@ -53,7 +58,13 @@ void snake_game() {
 		++head;
 		if (head == pixels + 64) 
 				head = pixels;
-			
+
+#ifdef GAME_SNAKE_NEWCONTROL			
+		if (joy_cmd != 0xff)
+		{
+				dir = joy_cmd;
+		}
+#else
 		if (joy_cmd == right) {
 				dir = direction_r(dir);
 				joy_cmd = 0xff;
@@ -63,6 +74,7 @@ void snake_game() {
 				dir = direction_r(dir);
 				joy_cmd = 0xff;
 		} 
+#endif
 			
 		// kopf einen weiter bewegen
 		*head = next_pixel(old_head, dir);
@@ -125,6 +137,12 @@ void snake_game() {
 				joy = left;
 			}else if(JOYISRIGHT){
 				joy = right;
+#ifdef GAME_SNAKE_NEWCONTROL
+			}else if(JOYISUP) {
+				joy = up;
+			} else if(JOYISDOWN) {
+				joy = down;
+#endif
 			}else{
 				joy = 0xff;
 			}